3599785121 has 2 divisors, whose sum is σ = 3599785122. Its totient is φ = 3599785120.

The previous prime is 3599785097. The next prime is 3599785151. The reversal of 3599785121 is 1215879953.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3379678225 + 220106896 = 58135^2 + 14836^2 .

It is an emirp because it is prime and its reverse (1215879953) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3599785121 - 2¹⁴ = 3599768737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3599785121.

It is not a weakly prime, because it can be changed into another prime (3599785151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1799892560 + 1799892561.

It is an arithmetic number, because the mean of its divisors is an integer number (1799892561).

Almost surely, 2^3599785121 is an apocalyptic number.

It is an amenable number.

3599785121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3599785121 is an equidigital number, since it uses as much as digits as its factorization.

3599785121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 50.

The square root of 3599785121 is about 59998.2093149454. The cubic root of 3599785121 is about 1532.5883708833.

The spelling of 3599785121 in words is "three billion, five hundred ninety-nine million, seven hundred eighty-five thousand, one hundred twenty-one".